<template>
  <div>
    <!-- 用户管理界面 -->
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUsersList">
            <el-button slot="append" icon="el-icon-search" @click="getUsersList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialog = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="usersList" border stripe>
        <el-table-column type="index" />
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 使用作用于插槽获取mg_state的值,因为作用于插槽会覆盖prop,所以prop="mg_state"不再生效,可去掉 -->
          <template slot-scope="scope">
            <!-- scope.row获取所在行所有数据 -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope = "scope">
            <!-- 修改按钮 -->
            <el-tooltip class="item" effect="dark" content="修改" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-tooltip class="item" effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            </el-tooltip>
            <!-- 分配角色按钮 -->
            <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="success" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 3, 4]" :total="total"
                    :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper">
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框区域 -->
    <el-dialog title="提示" :visible.sync="addDialog" width="50%" @close="addDialogClosed">
      <!-- 主体部分 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialog = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 展示编辑修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialog" width="50%" @close="editDialogClosed">
      <!-- 主体部分 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialog = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialog" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectRoleId" placeholder="请选择新角色">
            <!-- :label显示的文本 :value选中的值 -->
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialog = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/
      if(regEmail.test(value)) {
        return callback()
      }
      callback(new  Error('请输入一个合法的邮箱！'))
    }
    //验证手机号码的规则
    var checkMobile = (rule, value, callback) => {
      // 验证电话号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|166|17[3678]|18[0-9]|14[57])[0-9]{8}$/
      if(regMobile.test(value)) {
        return callback()
      }
      callback(new  Error('请输入一个合法的手机号码！'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        //当前页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2
      },
      //所有用户列表
      usersList: [],
      //总数据条数
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialog:false,
      //添加用户的表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      //添加表单的验证规则对象
      addFormRules:{
        //用户名验证
        username:[
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        //密码验证
        password:[
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email:[
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { validator:checkEmail, trigger: 'blur' }
        ],
        mobile:[
          { required: true, message: '请输入电话号码', trigger: 'blur' },
          { validator:checkMobile, trigger: 'blur' }
        ]
      },
      //控制修改用户对话框的显示与隐藏
      editDialog:false,
      //查询到的用户信息对象
      editForm:{},
      //修改表单的验证规则对象
      editFormRules:{
        email:[
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { validator:checkEmail, trigger: 'blur' }
        ],
        mobile:[
          { required: true, message: '请输入电话号码', trigger: 'blur' },
          { validator:checkMobile, trigger: 'blur' }
        ]
      },
      //控制分配角色的对话框显示与隐藏
      setRoleDialog:false,
      //需要被分配角色的用户信息
      userInfo:{},
      //所有角色信息列表
      rolesList:[],
      //已选中的角色ID值
      selectRoleId:''
    };
  },
  created() {
    this.getUsersList();
  },
  methods: {
    async getUsersList() {
      const { data } = await this.$http.get("users", {
        params: this.queryInfo
      });
      if (data.meta.status !== 200) {
        this.$message.error("获取管理员列表失败");
      } else {
        this.usersList = data.data.users;
        this.total = data.data.total;
      }
      // console.log(data);
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      //再重新获取数据
      this.getUsersList();
    },
    //监听 当前页变动(页码值) 触发的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      //再重新获取数据
      this.getUsersList();
    },
    //监听 switch 开关状态的改变
    async userStateChange(userInfo) {
      const { data } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      );
      if (data.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state;
        this.$message.error("更新用户状态失败!");
      }
      this.$message.success("更新用户状态成功!");
    },
    //监听添加用户对话框关闭
    addDialogClosed() {
      //重置对话框添加内容(关闭对话框内容重置)
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async vali => {
        if(!vali) return
        //发起添加用户的网络请求
        const {data} = await this.$http.post('users',this.addForm)
        if(data.meta.status !== 201) {
          return this.$message.error('用户创建失败！')
        }
        this.$message.success('用户创建成功！')
        //隐藏添加用户的对话框
        this.addDialog = false
        //重新刷新用户列表
        this.getUsersList()
      })
    },
    //展示编辑修改用户的对话框
    async showEditDialog(id) {
      const {data} = await this.$http.get('users/'+id)
      if(data.meta.status !== 200) {
        return this.$message.error('查询失败')
      }
      //把查询到的用户信息保存到editForm中
      this.editForm  = data.data
      // console.log(data.data);
      //显示修改用户对话框
      this.editDialog = true
    },
    //监听修改用户对话框关闭
    editDialogClosed() {
      //重置内容
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async vali => {
        if(!vali) return
        //发起修改用户信息提交的网络请求
        const {data} = await this.$http.put('users/' + this.editForm.id,{
          email:this.editForm.email,
          mobile:this.editForm.mobile
        })
        if(data.meta.status !== 200) {
          return this.$message.error('更改用户信息失败')
        }
        //关闭对话框
        this.editDialog = false
        //刷新用户列表
        this.getUsersList()
        //提示修改成功
        this.$message.success('更改用户信息成功')
      })
    },
    //根据id删除对应用户的信息
    async removeUserById(id) {
      const res = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      //点击确认删除，返回字符串confirm，点击取消删除，返回字符串cancel
      // console.log(res);
      if(res !== 'confirm') {
        return this.$message.info('已取消删除!')
      }
      const {data} = await this.$http.delete('users/' + id)
      if(data.meta.status !== 200) {
        return this.$message.error('删除用户失败!')
      }
      this.$message.success('删除用户成功!')
      this.getUsersList()
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      //展示对话框之前,获取所有角色的列表
      const {data} = await this.$http.get('roles')
      if(data.meta.status !== 200) {
        this.$message.error('获取角色列表失败')
      }
      this.rolesList = data.data

      this.setRoleDialog = true
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      if(!this.selectRoleId) {
        return this.$message.error('请选择分配的角色!')
      }
      const {data} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectRoleId})
      if(data.meta.status !== 200) {
        this.$message.error('更新角色失败!')
      }
      this.$message.success('更新角色成功!')
      this.getUsersList()
      this.setRoleDialog = false
    },
    //监听分配角色对话框关闭
    setRoleDialogClosed() {
      //重置对话框
      this.selectRoleId = ''
      this.userInfo = {}
    }
  }
};
</script>

<style scope>
</style>